[Chemical Knowledge]：Properties, uses, upstream and downstream raw materials, storage methods, price of mixed benzene

Benzene Mixing Properties

Mixed benzene (Mixed Benzene) is a mixture of different proportions of benzene, toluene, xylene and other aromatic hydrocarbons. Its appearance is a colorless transparent liquid with a fragrant odor and a density of about 0.87-0.88g/cm³. Blend benzenes have a wide range of boiling points, typically between 80°C and 170°C, depending on their specific composition. Mixed benzene is highly volatile and flammable, and the flash point is generally lower than 30°C, so special attention should be paid to fire and explosion during use and storage.

Mixed benzene use

Mixed benzene has a wide range of uses in the chemical industry. It is mainly used to produce pure aromatics such as benzene, toluene and xylene, which are the basic raw materials for many chemical products. For example, benzene is the basis for the production of styrene, phenol, adipic acid and other chemical products; toluene is used to produce toluene diisocyanate (TDI), which is an important raw material for the manufacture of polyurethane; xylene is used to produce p-xylene (PX), which is the key raw material for the synthesis of terephthalic acid (PTA). In addition to being used as a raw material, mixed benzene is also used as a solvent and is widely used in industries such as paints, coatings, inks and adhesives.

Benzene-mixed upstream feedstock

The main upstream raw materials of mixed benzene are petroleum and coal. Through petroleum refining and coal chemical processes, aromatic fractions containing mixed benzenes can be obtained. Petroleum cracking and catalytic reforming are important ways to obtain mixed benzene. In the process of petroleum cracking, high-temperature cracking can produce aromatic mixtures containing a large amount of mixed benzene; in the process of catalytic reforming, low-value alkanes are converted into high-value aromatics through the action of reforming catalysts. Mixed benzene and its components can also be obtained from coal after high-temperature carbonization and coking.

Benzene-mixed downstream products

The downstream products of mixed benzene are widely used in various fields. As an important basic chemical raw material, benzene is widely used in the synthesis of styrene, cyclohexane, phenol, adipic acid and other chemical products. Toluene is mainly used in the production of TDI and explosives. As a solvent and chemical raw material, xylene is widely used in coating, printing ink, pesticide and pharmaceutical industries. With the development of fine chemicals and polymer materials, the application prospect of mixed benzene and its components in new materials, new energy and other fields is also very broad.

Mixed benzene storage method

Due to the high volatility and flammability of mixed benzene, its storage requires special attention to safety. Mixed benzene should be stored in a cool, well-ventilated special warehouse, away from fire sources, heat sources and oxidants. Storage containers shall be corrosion-resistant metal cans and be well sealed to prevent volatilization and leakage. The warehouse shall be equipped with appropriate fire fighting equipment, such as dry powder fire extinguisher, foam fire extinguisher, etc. The storage temperature of mixed benzene should be controlled between 15°C and 25°C, and direct sunlight and sudden temperature changes should be avoided. During storage and transportation, relevant regulations and standards should be followed to ensure safe operation.

Mixed benzene safety

Mixed benzene has certain toxicity and environmental hazards. In the process of production and use, protective measures must be taken to avoid inhalation, skin contact and eye contact. Operators should wear protective gloves, protective glasses and gas masks, and work in a well-ventilated environment. Benzene-mixed wastes shall be treated in accordance with hazardous waste treatment regulations and shall not be discharged at will. Emergency plan shall be established to prevent possible leakage, fire and other accidents to ensure production safety and environmental protection.

Mixed Benzene Market Supply and Demand Analysis

The supply-demand relationship of mixed benzene market is affected by many factors. Upstream crude oil prices, downstream product demand, production process progress and environmental regulations will have an impact on the mixed benzene market. In recent years, with the rapid development of the global petrochemical industry and the continuous growth of downstream demand, the market demand for mixed benzene continues to rise. The supply of mixed benzene is also facing certain challenges due to environmental protection policies and fluctuations in raw material costs. In the future, with the progress of technology and the improvement of environmental protection requirements, the mixed benzene market is expected to develop in a more green and efficient direction.

Benzene Blend Future Development Trend

With the enhancement of environmental awareness and technological progress, the future development trend of mixed benzene is mainly reflected in the following aspects: first, the optimization and innovation of production process, through catalyst improvement and process optimization, improve production efficiency and reduce the generation of by-products; second, the development of green chemical industry, promote the use of renewable raw materials and environmental protection technology, reduce the impact on the environment; third, the diversification of market demand, with the development of polymer materials, new energy and other fields, the application prospect of mixed benzene will be broader. As an important chemical raw material, the development prospect of mixed benzene is still broad, but it also faces the dual challenges of technology and environmental protection.

Conclusion

As an important chemical raw material, mixed benzene has a wide range of uses and development prospects. Its high volatility and flammability also place stringent requirements on safe storage and use. With the progress of technology and the improvement of environmental protection requirements, the mixed benzene industry will develop in a more green and efficient direction. By continuously optimizing the production process, promoting green chemical industry and expanding the application field, the mixed benzene industry is expected to achieve greater development in the future.